You've got the occupancy tax figured out, which is something that you don't have to worry about since Airbnb takes care of all of that for you. As for the amount that gets transferred in your account, that's considered income which you have to report at the end of the year when doing your taxes.
Basically, the rule of the IRS is, whatever money you have incoming, it has to be reported. If we bet each other $1 right now and you win, then I give you a $1 bill, that technically has to be reported in your taxes.
The amount you pay is based on your total annual earnings. Whichever tax bracket you fall under for your taxable income, that's the percentage that you'll pay. I agree with Allison, if you don't have an accountant or tax professional helping you out, over budget for your taxes and withhold 33%, put that in a savings account.
Make sure to also keep diligent track of all your expenses that goes into running the Airbnb. All of that is tax deductible and will incredibly reduce your taxable income at the end of the year.